663466145 has 4 divisors (see below), whose sum is σ = 796159380. Its totient is φ = 530772912.

The previous prime is 663466127. The next prime is 663466169. The reversal of 663466145 is 541664366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 408201616 + 255264529 = 20204^2 + 15977^2 .

It is a cyclic number.

It is not a de Polignac number, because 663466145 - 2⁶ = 663466081 is a prime.

It is a super-2 number, since 2×663466145² = 880374651122322050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66346610 + ... + 66346619.

It is an arithmetic number, because the mean of its divisors is an integer number (199039845).

Almost surely, 2^663466145 is an apocalyptic number.

It is an amenable number.

663466145 is a deficient number, since it is larger than the sum of its proper divisors (132693235).

663466145 is a wasteful number, since it uses less digits than its factorization.

663466145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132693234.

The product of its digits is 311040, while the sum is 41.

The square root of 663466145 is about 25757.8365745262. The cubic root of 663466145 is about 872.1802650529.

The spelling of 663466145 in words is "six hundred sixty-three million, four hundred sixty-six thousand, one hundred forty-five".